BRUSSELS, BELGIUM - SEPTEMBER 22: Artists Tony Bennett and Lady Gaga attend a press conference about the album 'cheek to cheek' at City Hall on September 22, 2014 in Brussels, Belgium. (Photo by Mark Renders/Getty Images)

BRUSSELS, BELGIUM - SEPTEMBER 22: Artists Tony Bennett and Lady Gaga attend a press conference about the album 'cheek to cheek' at City Hall on September 22, 2014 in Brussels, Belgium. (Photo by Mark Renders/Getty Images)

BRUSSELS, BELGIUM - SEPTEMBER 22: Artists Tony Bennett and Lady Gaga attend a press conference about the album 'cheek to cheek' at City Hall on September 22, 2014 in Brussels, Belgium. (Photo by Mark Renders/Getty Images)

US singers Lady Gaga (R) and Tony Bennett give a press conference to launch their album 'Cheek to Cheek', in Brussels, on September 22, 2014. Lady Gaga and Tony Bennett are in Brussels to perform a mini-concert on the city's 'Grande Place', to film a video clip and officially launch their duo album. AFP PHOTO / EMMANUEL DUNAND (Photo credit should read EMMANUEL DUNAND/AFP/Getty Images)

US singers Lady Gaga (R) and Tony Bennett give a press conference to launch their album 'Cheek to Cheek', in Brussels, on September 22, 2014. Lady Gaga and Tony Bennett are in Brussels to perform a mini-concert on the city's 'Grande Place', to film a video clip and officially launch their duo album. AFP PHOTO / EMMANUEL DUNAND (Photo credit should read EMMANUEL DUNAND/AFP/Getty Images)

NEW YORK, NY - JULY 28: Singer Lady Gaga and Tony Bennett are seen arriving at Tony Bennett Jazz Event in NYC on July 28, 2014 in New York City. (Photo by Raymond Hall/GC Images)

NEW YORK, NY - JULY 28: Lady Gaga arrives to their 'Cheek To Cheek' taping at at Jazz at Lincoln Center on July 28, 2014 in New York City. (Photo by Jamie McCarthy/Getty Images)

NEW YORK, NY - JULY 28: Lady Gaga and Tony Bennett arrive to their 'Cheek To Cheek' taping at at Jazz at Lincoln Center on July 28, 2014 in New York City. (Photo by Jamie McCarthy/Getty Images)

NEW YORK, NY - JULY 28: Tony Bennett and Lady Gaga arrive to their 'Cheek To Cheek' taping at Jazz at Lincoln Center on July 28, 2014 in New York City. (Photo by Kevin Mazur/Getty Images)

MONTREAL, CANADA - JULY 01: In this handout image provided by Patrick Beaudry,Tony Bennett and Lady Gaga jazzed it up at the Montreal Jazz Festival on July 1, 2014 in Montreal, Canada. Gaga surprised the crowd by joining Bennett on stage for a few numbers. The two are collaborating on a jazz album to be out later this year. (Photo by Patrick Beaudry via Getty Images)

MONTREAL, CANADA - JULY 01: In this handout image provided by Patrick Beaudry,Tony Bennett and Lady Gaga jazzed it up at the Montreal Jazz Festival on July 1, 2014 in Montreal, Canada. Gaga surprised the crowd by joining Bennett on stage for a few numbers. The two are collaborating on a jazz album to be out later this year. (Photo by Patrick Beaudry via Getty Images)

NEW YORK, NY - JUNE 16: (Exclusive Coverage) Lady Gaga performs onstage at Frank Sinatra School of the Arts on June 16, 2014 in New York City. (Photo by Kevin Mazur/WireImage)

NEW YORK, NY - JUNE 16: (Exclusive Coverage) Lady Gaga and Tony Bennett make surprise appearance at Frank Sinatra School of the Arts on June 16, 2014 in New York City. (Photo by Kevin Mazur/WireImage)

NEW YORK, NY - JUNE 16: (Exclusive Coverage) Lady Gaga and Tony Bennett make surprise appearance at Frank Sinatra School of the Arts on June 16, 2014 in New York City. (Photo by Kevin Mazur/WireImage)

NEW YORK, NY - JUNE 16: (Exclusive Coverage) Lady Gaga and Tony Bennett make surprise appearance at Frank Sinatra School of the Arts on June 16, 2014 in New York City. (Photo by Kevin Mazur/WireImage)

NEW YORK, NY - APRIL 06: (EXCLUSIVE COVERAGE) Lady Gaga sings to Tony Bennett during her concert at Roseland Ballroom on April 6, 2014 in New York City. (Photo by Theo Wargo/Getty Images)

NEW YORK, NY - APRIL 06: (EXCLUSIVE COVERAGE) Tony Bennett and Lady Gaga pose backstage after her show at Roseland Ballroom on April 6, 2014 in New York City. (Photo by Theo Wargo/Getty Images)

It's none other than American music legend Tony Bennett. It may come as no surprise since the two have become close friends after working together on several projects, including the GRAMMY-winning jazz album, Cheek to Cheek.

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Bennett, 88, told the New York Post that when she marries her beau Chicago Fire star Taylor Kinney, he'll sing. "They invited me to do it, and of course, I will," the singer said.

When ET spoke with Lady Gaga at the 2015 Oscars, she admitted that Taylor would really love to have Tony sing at their wedding. "He and Tony get along very well," she said.

While Bennett didn't spill any details about what he'll be singing, if Lady Gaga will join him for a performance, or specifics about the highly-anticipated event, he did share his approval of the groom. "She's marrying a very wonderful man, very talented and very handsome," Bennett expressed. "I think he's going be highly successful in films. He's a very nice person."

Kinney and Gaga have been dating since 2011 when he first starred in her music video for "You and I." The actor recently proposed with a beautiful heart-shaped engagement ring on Feb. 16.